Typewriting machine



May 23, 1933. I rr 1 ,910,971

' TYPEWRITING MACHINE Filed Oct. 5, 1928 2 Sheets-Sheet 1 4 Affome May23, 1933. 1,910,971

J. A. B. SMITH TYPEWRITING MACHINE 2 Sheets-Sheet 2 Filed Oct. 5, 1928Patented May 23, 1933 UNITED STATES PATENT OFFICE i JESSE A. B. SMITH,0F STAMFORD, CONNECTICUT, ASSIGNOR TO UNDERWOOD FISHER COMPANY, OF NEWYORK, .N'. Y., A CORPORATION 01 DELAWARE 'rnrzwarrme mienmn Applicationfiled October 5, 1928. Serial No. 310,468.

This invention relates to manifolding upon webs, each having asuccession of forms printed thereon, and particularly to apparatus ofthis kind in which the carbon-inlays are stripped to the next form aftereach form is typed. The invention relates mainly to machines in whichthe carbon-inlays remain stationary while the web-plies arepulled orstripped therethrough.

In the Crews Patent 1,565,550,, carbonsheets form a unit which may ridethrough the machine with-the web, but which may eventually be held backby means of a stop, in order to permit the web-plies to be drawntherethrough, to enable the carboninlays to be used 111 manifolding thesucceeding form.

These carbon-inlays may be formed and modified in a variety of ways, andaccording to such modifications, as the Niagara, the carbons areconnected together into a pack by a means of projecting side tabs; theside tabs of all the carbons being permanently stitched together, and anextra plyv or leaf being also used, not .for manifolding, but as abacking or attachment or support for the carbons that do manifold. Aleaf is useful in forming a fold for use with a stationary stripper inholding the carbons stationary at the stripping operation.

One of the objects of this invention is to avoid the liability of thecarbon unit or pack becoming disarrayed relatively to the work-plies.Another object is to facilitate the operation of advancing the work-webrapidly and with certainty at the strippmg operation after the typing ofeach form. Another feature is to facilitate the tearing off of theweb-plies accurately and without liabilit of injury to the carbon-unit.Another eatureis the location of the web in position to begin the firstline of typing on the succeeding form.

According to the present invention, the web-plies are drawn rapidlythrough a chute, within which the web fits and by which web is at alltimes trued, so that its side edges are at right angles to the printingline on the platen; or, in other words, so that the printed lines 'uponthe Webs are exactly parallel with the laten at all times. There isprevented all llability of displacement at the carbon-strippingoperation. This chute includes two co-operating portions, one of whichis disposed at the intake side of the platen, and the other of which isdis osed at the delivery side of the platen, eing spaced considerablythereabove.

The reason for separating or spacing these portions of the chute is toallow opportunity for the travel to and fro therebetween of thecarbon-unit, which the side-tabs make wider than the work-web, and whichtherefore cannot pass through the web-guiding chute. A separate chutemay be provided for the carbon-unit. This separate chute may be locatedbetween said intake and delivery portions of the web-chute. There isenough space allowed between said narrow intake and delivery portions ofthe webchute to permit all the advancing and retracting of the widecarbon-unit that is re-' quired; and thisis the space that is preferablyutilized for the purpose of arran ing therein the guide or chute for thecar onunit, which, ofcourse, does not need to be positioned with extremeaccuracy relatively to the printin line on the platen. The use of acarbon-c ute is not necessary in all cases. I

The projecting side edges of the carbonsheets are fastened together in aflexible manner, to permit them to vb'e advanced around the platen to acarbon-stripping position after a form is typed. Means, including astripper-blade mounted at the delivery side of the platen to catchwithin the carbonunit, is effective to detain the carbon-unit, so thatadvance of the web-plies may strip the carbon-sheets and bring them intoengagement with a fresh set of forms. The extent of the stripping isdetermined by a gage, which co-operates with the leading end of thework-web. After stripping the carbons, the platen may be reverselyrotated to bring the typed set of forms to tearing-off position on apaper-table at the delivery side of the platen, and at the same time tobring the succeeding form to position to have the first line typedthereon.

The work-web side-guides at the intakeside of the platen are in thepaths of the projecting ends of the carbon-sheets, and are employed toaid in stop ing the retro- 5 grade movement of the car on-sheets andhelp prevent their being retracted at their leading ends out ofengagement with the stationar carbon-stripper at the delivery side of te platen.

It is a feature of the present invention to provide a movableleading-end gage normally retracted, and having a clip or means wherebythe leading ends of the weblies may be attached to the gage after theeading set of forms has been types. Then, by

pulling the gage or carrier upwardly, to-

gether with the web, the stripping proceeds until the movement of thegage, carrier or movable stripper is arrested by adjustablestop-devices, the leading end of the next succeeding set of untypedforms being thus brought ap roximately even with the leading ends of therestrained carbon-sheets.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a partial perspective view of the platen-frame of anUnderwood typewriting machine having my invention attached thereon inpreferred form, as a detachable unit. The work-web is shown at the endof the carbon-stripping movement.

Figure 2 is a fragmentary cross-sectional view, front to rear, of thestructure shown in Figure 1.

Figure 3 is a fragmentary disassembled diagrammatic view of anassemblage of carbon-sheets employed in practicing the presentinvention. The carbon-sheets are illustrated as positioned betweendisassembled plies of the work-web.

Figure 4 is a detail view, shown in crosssection, illustrating a featureof construction of stripping devices, including a telescopic gage-baremployed in carrying out my invention.

Figure 5 is a fragmentary cross-sectional view through a stationarydetachable carbon-stripping blade employed in the present invention anda mounting bar for the stripping blade, supported in operative positionon a front paper-table.

Figure 6 is a fragmentary erspective view of the structure shown inFigure 1, a form of the work-web being shown in position for the secondform to receive the address, which is customarily preceded by the date(not shown).

The resent invention is illustrated in connection with an Underwoodstandard typewriting machine. However, it will be understood as thedescription proceeds that my invention may be applied to other makes oftypewriters.

' In an Underwood typewriting machine,

types 10 strike against a platen 11, mounted on a shaft 12 ournaled inside plates 13 of a platen-frame, generally designated as 14. Each sideplate 13 includes a web 15 having at its top an outwardly-benthorizontal flange forming a table or support. The usual rear plate 17extends between the side plates 13, and at its front end guideswork-pieces between the platen 11 and the lower feed-rolls 1 8. Thefeed-rolls may be released by a lever 19.

For mounting the work-handling devices as a unit on the frame 14, acarbon-stripping frame, generally designated at 20, is preferablyprovided, and includes a pair of opposite brackets 21, each of which hasan outwardly-turned base 22, resting on the adjacent mounting-plate 15,to which it may be detachably secured b screws 16. The frame alsoincludes a crossar 23 fastened between the brackets 21 at the front onlugs 24.

To each bracket 21 of the frame is joined an upwardly and rearwardlyinclined arm 25, which has an ear 26. A rear tie-bar 27 is fastenedbetween the ears 26.

.A rear paper-table 28 for the work-web may include right and leftplates 29, each of which has horizontal slots 30, each slot positionedin a recess 31. Screws 32 may pass through the slots 30 for adjustablyfastening each rear paper-table section 29 to the cross-bar 27. Eachsection 29 is provided with an outer flange 33, which serves as aside-edge guide or chute at the introductory side of the platen for amultiple-ply web 34.

A chute or paper-table for the work-web at the delivery side of theplaten, generall designated as 40, includes a right and a le plate orsupport 41, each having horizontal mounting-slots 42, positioned inrecesses which may be like the recesses'31. Screws 32 may engage throughthe slots 42 for adjustably fastening the plates 41 to the crossbar 23of the framing. Each of the plates 41 is provided with an u perside-edge guide-flange 44, and preferably with a lower guide 45. Theupper right and left flanges 44 of the guide-plates 41 are positionedopposite each other a distance but slightl exceeding the width of thework-web 34. ach guide-flange 44 may begin at the upper edge of plate 41and extend downward to terminate a little above a stationarystripperblade 47, extending along the platen.

A carbon unit or pack, generally designated as 48, is employed andincludes a plurality of carbon-sheets 50. The bodyportion of each of thesheets 50'may be about as wide as the work-web 34. Each carbon-sheet,except as hereinafter noted, may have, an off-set tab-like extension 51on each side, adjacent its lower or trailing edge. These tabs extendbeyond the side edges of the work-web, and may be flexibly fastenedtogether, as by lines of sewing 52 approximately parallel to the sideedges of the workweb, or in any other suitable manner. The

plies of web are threaded between the leaves of the carbonack.

The lower right and left guide-flanges 45 ma form a pair of side-edgeguides for the car on-unit, and are positioned opposite each other,their separation slightly exceedmg the distance between the side edgesof the ta -extensions 51.

The carbon-sheets 50 in the pack 48 ma be produced in the followingmanner. top carbon-sheet 53 of the pack and a next lower carbon-sheet 54are provided by folding a single long sheet, which is thus formed intoan upwardly-opening loop (Figure 3), through which the strip er-blade 47extends. One or more single-p y carbon-sheets 50 may underlie the loopedor folded sheets 53, 54, and may be fastened to them by sewing togetherthe extensions 51 of all the carbonsheets (except the top sheet or leaf53,-

which has no extensions 51), along the line 52. Both of the sheets 53,54 are positioned between the first and second plies 55 of the work-web,with the stripper-bar 47 therebetween, and the remaining carbon-sheetsmay alternate with the web-plies.

The stripper blade 47 may be fastened to a mounting bar 57, and bespaced a short distance to the rear of the latter by plates 58positioned at each end of the blade and held thereon by rivets 56. Toprevent lateral displacement of the bar 57, its length may be such thatit fits'snugl y between the side plates 13. The bar 57 is supported ashort distance above the printing hne by two extensions or rests 59, oneon the lower end of each flange 45. The lower rear edge of the bar 57 isbeveled so as to form with the blade 47 a throat 60 (Figure 5) forconvenience when inserting work-pieces up between the bar and the blade.A V-shaped notch 61 is cut in the forward portion of each extension orrest 59 to provide a seat for the lower beveled edge of the bar 57. Aportion of each extension 59 is cut away in the rear of the notch 61 torovide a clearance 63 for the blade 47. Ad acent the upper end of eachclearance 63, a shoulder 64 may form a seat for the bar 57, whose upperfront edge ma be beveled to serve as a knife for cutting o the typedforms.

A latch-piece 66 may be pivoted about a pin 67 in a heel-portion 68 ofeach rest 59, and have a hook-member 69 engaging the bar or knife 57 forholding it. It can be seen that the above-described construction andmounting of the blade 47 and the bar 57 permits the guide-flanges 44, 45to be laterally adjusted relatively to each other for use with varyingwidths of work-debs 34 and carbons.

It is a feature of the present invention are severed from the web. Tothis end, a

support, which may be in the form of a te escopic gage-bar or staff,generally desi nated as 71, is mountedon the framewor cross-bar 23between the guide-plates 41. The support 71 extends upwardly andrearwardly to permit the gage-bar or staif to stand in rear of the par-table 40, a section 72 of the cross-bar is offset, i. e., bentrearwardly. A lower member 73 of the staff or age-bar 71 is rigidlyfastened to a spacerlock 74 by rivets 75, which also fasten the blockrigidly to the crossbar 23. A telescopic supporting guide or member,generall designated as 76, is slidably mounte on the staff 73 by fourlugs 77 bent rearwardly, and clasping the staff, two lugs being disposedat each end of a body 78 of the slide, one on each side thereof. Aportion of the body 78 is offset forwardly away from the lower member 73(see Figure 4), to form a boss 79. An upwardly-extending slide-bar 80 isriveted to the boss 79 and co-operates telescopically with staff 73, andmay be slid upwardly upon staff 73 for adjustment thereof, until it isarrested by the upper end of 76 abutting against a stop, which may beadjustably fastened to the staff 73'and includes a strap 82 surroundinstaff 73, and means for pressing the ends 0. the strap to ether so as topinch thestafi 73 tightly, w ereby to hold the stop securely whereadjusted. The pressing means includes oppositely-positioned holes in thestrap-ends, one hole having a right-hand thread and the other holehaving a lefthand thread. A turnbuckle-stud. 83 engages in each threadedhole and has a handle 84 fastened to it and extending outwardly frombetween the ends of the strap. The slide-bar 80 may be moved downwardlyuntil the lower pair of lugs 77 strikes an outwardly-bent stop-lug 85 onthe lower end of staff 73.

An upper member 87, for carrying the paper, is slidably fastened on thebar 80 by four lugs 88 bent rearwardly, and clasping the bar 80. Themember 87 may be moved downwardly alon the telescoping staff or bar 80until its ower end strikes a stopscrew 90, which may be threaded in anone of a plurality of'tap ed holes '91 positioned along the bar 80. heupward movement 3; the slide or carrier 87 is limited by a lug Across-bar is'fastened at right angles to the upper end of the slide orcarrier 87,

wardly-extending tapered gathering or realigning in 97 is fastened ineach end of the crossar 95 for entering erforations in the work-we Aforward y-extending lug or gage 98 is preferably joined to the top-edgeportion of the cross-bar 95 over the ad acent pin 97.

In preparing, the sheets of the carbonpack 48 are interleaved with thework-web plies 34 by placing the top ply 55 in front of the loopedcarbon-sheets 53, 54 (Figure 3). The next underlying ply 55 is threadedthrough a slit-like opening between the bottom edge of the carbon-sheet54 and the bottom edge of the next underlying carbonsheet 50. Tofacilitate the insertion of said next ply 55, and to safeguard thebottom edge of said next underlying carbon-sheet agalnst being torn, anarrow strip 99 ad.- acent the lower edge of the last-named carn-sheetma be folded up before the sheet 1s sewed to t e other sheets of thepack 48. The remaining work-plies may be mserted in like manner betweenthe remaining carbon-sheets whose lower-edge portions may P be folded upas described above, the bottom work pl 55 being disposed under thebottom car on-sheet 50. 1

After threading the worklies between the carbons and bringing the endingedges of the first form '70 of the work-web even with the leading edgesof the carbon-sheets 53, 54 and squarin up the carbon-sheets with theweblies,-t e composite work-web ma be passe down over the'rear papertab0 2'8 and inserted at the introductory side of the platen. Since thedistance be tween the outer edges of the carbon extensions 51 'is'widerthan the distance between P the rear guide-flanges 33, it may benecessary while inserting the carbon-interleaved web 34 to guide thelatter above the table 28 with one hand of the o rative until theextensions 51 are advance past the guideflanges 33. The platen may nowbe revolved by a usual fin er-wheel 100, to bring the leading edge 0 thework-web a short distance above the osition normally occupied by thestri perade 47 The latter may be detached or convenience when passingthe first or top ply 55 and the first or top carbonsheet 53 between theblade 47 and its bar 57. The carbon sheet or leaf 53 has no offsetextensions 51.

After the carbon-sheet 53 and the top work-ply 55 have been passedbetween the blade 47 and bar 57, the latter will be attached to thesupporting hangers 59. The platen may be reversely rotated to bring thefirst writing line of the first form to the printing line, which may bedetermined by the usual win -scales 101. The composite web may be avanced until the blade 47 intercepts the bottom of the loop formed bycarbons 53, 54.

While the first form is thus being t ped, the gage-bar 71 is incollapsed con ition (Figure 2), and the gage-plus 97 are disposed ashort distance below the positions which are occupied by the agein holes103, in the leading form 70, w en t e lowest line of the form is beingtyped. It will be understood that the register-pins 97 will be sopositioned, even though only one or two lines are typed on the form.However, when a web 34 having shorter forms is to be typed, theregister-pins 97 will be set in a new position con-es onding to thelengths of the new forms b t e above-described adjustable gneans incluing the strap 82 and the screw After the last line of data is typed onthe leading form, the feed-rolls 18 will be thrown off the platen andthe operative will ull the work-web 34 and interleaved caron-sheets 50up together against the stops 98 and insert the pins 97 through theholes 103, preparatory to stripping the carbons. At this time the pins97 occupy their bottom ositions. Open end slots 104 are provided in theupper-edge.portions of the carbons 53, 54, to clear the pins 97. Thetops of the carbon-sheets 50, back of the carbon-sheet 54, willpreferably be cut off enough below the holes 103 to permit the pins 97to pass over their upper edges.

After typing the last line on the forms, the operative will preferablygrasp the leading-edge portion of the work-plies with the thumb of onehand centrally disposed between the sides of the plies to press themagainst the liftable cross-bar 95 of the carr1er, the fingers of thesame hand being dising against a base-member 105 of a substantiallyU-shaped bridge 106 on the carrier in rear of the gage-bar 71. Thebridge may include ears 107 upon arms 108, fastened to thecarrier-cross-bar 95 by rivets 109. The bridge 106 is arranged to clearall parts mounted on the gage-bar 71 below it, and permits the operativeto grip the webpiece firmly and conveniently against the cross-bar 95 ofthe carrier and raise the latter without interference by any of theparts. To prevent the operative s thumb bringing ressure upon thecarbon-sheets 53, 54 interllaaved between the web-plies, central ortionsof these carbons adjacent the top e ges thereof are cut away at 110. 1

When the cross-piece 95 of the carrier is pulled upwardly, its movementwill be arrested by the strap 82 and the lug 92 when two form-lengths ofthe web have risen above the interleaved blade 47. Before the twoleading forms reach this position, the blade 47 will have arrested thecarbon-pack 48. The latter, it will be understood, moved up with theweb-plies, being carried along by friction. When the upward movement ofthe cross-bar 95 is arrested, the leading osed in the rear of thecross-bar and pressedges of the carbon-sheets 53, 54 will be found tooccupy a position just below a weakened dividing line 111 between thetyped form and the next succeeding form.

The feed-rolls 18 are now restored and the web is cast off from pins 97,and the workweb is rolled back around the'platen until the weakened line111 is over the papertable 41 and the first writing line of the nextsucceeding form is disposed at the printing line. The carbon-sheetsinterleaved with the web-plies are retracted with the workweb byfriction. The typed sets of forms may be severed from the web bypressing the finger against the table 40, just below the weakened line111, and tearing the plies along this line. The next cycle of operationsmay now begin.

lln cases where no weakened lines are provided, or where very shortheadings for a form are provided, the typed form may be severed alongthe blade-edge 65. Thereafter, in the case where the headings arerelatively long, it may be necessary to roll the work-web ahead to bringthe first writ ing line of the form to the printing line. In a work-webwhere gage-pin holes 103 are not provided in the tops of the forms, theleading edge of the work-web may be pulled up against the gages 98 andheld there while the work-web is advanced, the pins 97 beingdisregarded.

It would be objectionable if the leading ends of the top web-ply 55 andthe carbons 53, 54 should inadvertently pass below the top edges of theinterleaved blade 47 while the platen is being reversely rotated. Tohelp prevent this occurring, the ends of the guide-flanges 33 nearestthe platen 11 are positioned relatively to the forward edge of the blade47, whereby the bottom ends of the extensions 51, which will be theleading ends when the platen is reversely rotated, will be arrested bymeeting the lower edges of the flanges 33 before the leading ends of theweb-plies and the carbon-sheet 53 can reach the blade 47, thus givingvisual signal to the operator to desist from retracting the sheets.

The reason for raising the web so far above the platen, Figure 1, is toeffect the carbon-stripping; since by the time the stripping iscompleted, the carbons have reached their topmost positions, 'while thetyped form, from which the carbons have just been stripped mustnecessarily extend he raised carbons.

Thus when the stripping of the carbons is completed, the carbon-sheetelement stands as seen at Figure 1, with the bight or fold of the frontleaf 53 caught by the interleaved stationary stripping bar 47, seeFigure 3'. At this time all of the carbons extend upwardly from thiscarbon-arresting stripping bar 47. Since by'reason of the strippingoperation, the carbons are made to face the first untyped forms on theweb, it will be seen that the top edges of the carbons lie just belowthe line 111 that divides the first untyped form from the typed form,which still remains integral with the web.

It therefore remains to sever the typed plies from the web, and also toreosition the web for beginning the first line 0 typing on the firstuntyped form, which is the one that has now become interleaved withcarbons.

The severing of the typed form from the web should be done first, andfor this purpose the web is bodily retracted (together with the strippedcarbons, due to friction) to bring the web to severing position, i. e.,with the severing line 111 of the typed form in register with thesevering knife 57. The typed form is then severed by the aid of theknife.

At the severing operation, the carbons lie just below the top edge ofthe knife, so as not to be severed thereby. But the front leaf 53 of thepack still remains confined betwen the knife and the interleavedstripping blade 47. By keeping the leaf 53 so confined, it results thatsa1d leaf will not foul the stripped blade 47 at the next advance of theweb. It will be understood that if the web is unprovided with weakenedsevering lines 111, the device 28, in the paths of thecarbon-projections 48, will arrest the carbons and web, or at leastnotify the operator to desist from retracting the web.

The web-severing knife 57 is preferably so located that the tearing offof the typed form leavesthe web in position to begin the typing of thefirst line on the next form.

It will be noted that the web-guiding elements 33 and 44 aresufliciently near each other to serve to ide the web accurately at rightangles to t e printing line, while 33 is sufficiently separated from 44to permit the necessary forms-length to-and-fro movement of thecarbon-pack. The distance from 33 to 44 is preferably equal to theheight of the carbon-pack plus the length of a printed form-web. Theguides 44 control,

claim:

1. In a typewriting machine having a platen-frame, web-feeding meansincluding a revoluble platen on said frame, around which may be fed fromthe rear a formbearing multiple-ply work-web interleaved with aplurality of carbon-sheets forming a unit, each of said carbon-sheetshaving an extension protruding from the side edges of said web, saidunit including a backing sheet joined at its trailing end to the firstcarbon-sheet, said extensionsbeing flexibly fastened together, wherebythe unit may be fed forward between said platen and said feed-roll to acarbon-shifting position after a set of forms is typed, the combinationof a frame detachably mounted on said platenframe, side-edge guides onsaid detachable frame for said work-web at the introductory side of saidplaten, a paper-table on said detachable frame at the delivery side ofsaid platen, side-edge guides for said work-web on said table, side-edgeguides for said carbon-sheet extensions on said table below the work-webguides thereon, a blade-member supported by said paper-table forengaging and arresting the advance of said carbon-unit without hinderingthe advance of said work-web, and gaging instrumentalities fordetermining the requisite advance of said work-web for shifting a freshset of forms into engagement with said carbonunit, preparatory toreversely feeding said web and said carbons through said machine andbringing said typed form to tearing-off position on said table.

2. The structure described in claim 1, characterized by means for makingthe webguides at both sides of the platen and the carbon-extensionguides laterally adjustable, and instrumentalitieson said table forcarrying said blade in operative position irrespective of the lateraladjustment of the guides on said table.

3. The structure described in claim 1, characterized by having theforward extremity of said guides at the introductory side of the platenpositioned a distance to the rear of the upper edge of said blade,measured along the path of said work-web, slightly less than thedistance from the leading edge of the carbon-sheet assemblage to theforward extremities of the lateral-extension assemblage. p

4. In a typewriting machine having a revoluble platen around which maybe fed from the rear a multiplely work-web having carbons interleavedetween its plies, and carbon-stripping mechanism including a paper-tableat the delivery side of said laten, the combination of means at thedevery side of said platen for arresting the advance of said carbons,depending members on said table for supporting said carbon-arrestingmeans, said table having sideedge guide-flanges for said work-web, meansfor laterally adjusting said flanges, and devices co-operatinglwith saidarresting means for supporting t e latter in any adjusted position ofsaid flanges.

5. In a typewriting machine having a revoluble platen around which maybe fed from the rear a multiple-ply work-web having carbons interleavedbetween its plies, and carbon-stripping mechanism including apaper-table at the delivery side of said platen, the combination ofmeans at the delivery side of said platen for arresting the advance ofsaid carbons, depending members on said table for supporting saidcarbon-arresting means, said table having sideedge guide-flanges forsaid work-web, means for laterally adjusting said flanges, devicesco-operating with said arresting means for supporting the latter in anyadjusted position of said flanges, said means including a blade parallelwith the platen, a bar to which said blade is fastened, and lowerextensions of the side-edge guide-flanges, in which extensions said baris slidably supported.

6. In a typewriting machine having a revoluble platen around which maybe fed from the rear a multiple-ply work-web having carbons interleavedbetween its lies,

and carbon-stripping mechanism including a' paper-table at the deliveryside of said platen, the combination of means at the delivery side ofsaid platen for arresting the advance of said carbons, depending members7 on said table for supporting said carbon-' arresting means, said tablehaving side-edge guide-flanges for said work-web,'m'eans for laterallyadjusting said flanges, devices cooperating with said arresting meansfor supporting the latter in any adjusted position of said flanges, saidmeans includin a blade parallel with the platen, a bar to w ich saidblade is fastened, and lower extensions of the side-edge guide-flanges,in which extensions said bar is slidably supported, said machine havinga platen-frame on which said table is mounted, said blade-supporting barfitting snugly between the sides of said platen-frame, whereby lateralmovement of said bar relative to said paper-table is prevented.

7. In a typewriting machine, the combination with a revoluble platen formanifolding webs, of a guide-chute at the deliver side of the platen fora carbon-unit which is wider than the work-web, and a chute for thework-web, including a web-delivering side-guiding chute at the deliveryside of said carbon-chute and narrower than the latter and sufficientlyremoved from the platen to permit the free advance of the carbon-unitwith the web, said work-web chute being laterally adjustable to fitdifferent widths of work-web, said carbon-unit chute being laterallyadjustable to suit different widths of'carbon-units.

8. In a typewriting machine, the combination with a revoluble platen formanifolding webs, of a guide-chute at the delivery side of the platenfor a carbon-unit which is wid- Width of carbon-unit for retaining thecarbon at any widthwise adjustment of the carhon-chute.

9. In a web-manifolding machine, the combination with a platen aroundwhich the Work-web travels, of a chute for guiding the side edges of theweb, said chute including a portion at the introductory side of theplaten and also including a separate portion at the delivery side of theplaten,

a stripper-bar at the delivery side of the platen extending across saidchute in position to detain a carbon-pack for the stripping operation,said chute including ed e guides for the opposite sides of the wor web,said edge guides being relatively adjustable for diflerent widths ofweb, means being provided for supporting said stripperbar at diiferentrelative adjustments of said side guides, said stripper-bar beingvremovably mounted upon said chute, and means for preventing itsdisplacement.

10. The combination with a platen around which travels a work-webinterleaved with carbon-sheets forming a pack, of a narrow side-guidingchute for said work-web, said chute including a portion at theintroductory sideof the platen and also a portion at the delivery sideof the platen, said chute having side guides for the opposite side edgesof the web, said side gulde adjustable relatively towards and from eachother, a clear ga being left between 'said introductory portion and saiddelivery portion of the chute, to permit the advancement and retractionof the carbon-pack, the latter having portions of substantially greaterwidth than the work-web and being too wide to pass through said chute,means for detaining the carbon-pack while the work-web is advanced, anda web-severin knife at the delivery side of the platen, said knife of alength to sever the widest web which said chute can be adjusted toaccommodate, and being serviceable for all widths of web in said chute,said chute having supports for the endsof the knife, provisions beingmade for relative adjustment between the knife and the chute toaccommodate different widths of work-web.

11. The combination with a typewriting machine having a platen and aplatenframe, of an attachment set down upon said platen-frame and havingend frames provided with flanges detachably secured upon theplaten-frame, a rear bar connecting said end frames, a paper-tablehaving relatively adjustable sections secured upon said bar and providedwith side gages for guiding the work-web, a bar above the platenconnecting the front of said end frames, and a work-table erected at thedelivery side of the platen and having sections relatively adjustableand attached to said front bar and provided with upper side guides forthe work-web, said front table also having lower and more widelyseparated side guides for over-width carbon-sheets, said front sec tionshaving means at the delivery side of the platen for detaining saidcarbons at the stripping operation. JESSE A. B. SMITH.

